Sorry for the double post, but I did see this link from a google search for the part number. Interesting theory as well. Maybe a 32GB model with a 128GB SDXC card included? (That would be 160GB) I doubt it's a Win8 tab as suggested as that would typically be indicated with an entirely different model number. I still think there's something to the "SP" designation which indicates "special edition."

don't know if you guys are interested any more but if you look at the accessories at their site the documentation for their accessories list it as an applicable model, i.e.
PA3884U-1BRR Toshiba 10 inch Tablet Battery Spec Sheet.pdf.......
....Applicable Models:Thrive AT105-T1016, AT105-SP0160M, AT105-T108, AT105-T1032......
it's listed as a thrive. So it must come with extra memory of some sort, probably sdxc card.

OK SP I think stands for spanish. Take a look at the detailed specs originally posted and then look at the one listed for Thrive AT105-SP0160M. under Platform, it says Android 3.1, Honeycomb, Spanish. So its a 16gb Thrive running a spanish version of Honeycomb. I must be seeing things. So are they going to completely make Tabs customizable in every way.

I fully agree with everything in that letter. For most of the same reasons, I've decided that this hardware/software is too much trouble than its worth. I'll re-look at the Thrive in 6 months or so, maybe for the kids. I need something that works more consistently.

I just got off chatting with a sales specialist at toshiba on their site about AT105-SP0160M she asked where I saw that at and I gave her the link Toshiba Support - Homepage and after a while of holding she said she didn't know what it was, and neither did her manager who also had never seen that before. The Manager was going to contact corporate about it. The mystery continues... What would be cool is if that was the model number for the Keyboard dock and it had a 160GB storage in it and an extra internal battery